<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>理解MVVM模型</title>
  <script src="../js/vue.js"></script>
</head>
<body>
<div class="app">
 <h2>{{ name }}</h2>
 <h2>{{ address }}</h2>
 <h2>{{ $options }} </h2>
 <h2>{{ $vnode }} </h2>
</div>
</body>
<script>
  Vue.config.productionTip = false
  const vm = new Vue({
    el: '.app',
    data: {
      name: 'beijing',
      address: '北京'
    }
  })

  console.log('vm :>> ', vm)
  // $el 
  console.log(vm.$el, vm.$emit)
</script>
</html>